Why is Concrete Reinforcing Rebar Support Chairs Better?

Benefits of Plastic vs. Metal Rebar Chairs

Rebar chairs are specially designed components made for supporting rebars, which are embedded metal bars used to reinforce newly-poured concrete. Rebars are laid out in a crisscross grid pattern and are locked together with the rebar chairs before the fresh concrete is poured over them. This reinforcement is necessary when laying the foundation for a new building.

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Rebar chairs can be made of metal, but they can also be produced in tough plastic. Some of the reasons plastic rebar chairs have an advantage include:

• High resistance to solvents, oils, and many acids
• Lightweight durable plastic lends to easier handling
• Fast and convenient snap-lock design saves time
• Eliminates tying at support points
• Low cost per unit

Plastic is one of the most important materials used in construction projects due to it's cost-effective substitute for metal components. Thermoplastic rebar chairs manufactured by Retlaw Industries are guaranteed to never rust or crack, ensuring they will never budge during construction!

If you are looking for more details, kindly visit Concrete Reinforcing Rebar Support Chairs.

Custom Rebar Chairs Built to Specification

Industries all over the United States trust the quality products manufactured at Retlaw Industries. Our injection molding division have decades of experience manufacturing high-quality rebar chairs for all types of businesses, which means you can trust our dedication to what we do. Certified plastic injection molding specialists at Retlaw can engineer and manufacture your rebar chairs to exact specifications. You will never have to compromise quality when you get your industrial plastic products from Retlaw Industries.

Get a product quote on rebar chairs today from the professional manufacturers at Retlaw!

If you want to learn more, please visit our website Galvanized Steel Cone.

Have a situation where I need 6 inch cover to the bottom of the rebar on a spread footing. The contractor simply drove short staubs of rebar into the ground to tie the rebar off to instead of finding 6 inch chairs. The inspector failed it saying the rebar is not allowed to touch the ground. I assume this is because the rebar will rust and spall the concrete. I can modify my detail so he can use 3 inch chairs but for future reference is this really an issue in practice?
I'm not a fan of metal rebar chairs for bottom bars for this reason. Corrosion in the exposed steel provides a path for moisture to get to the primary bars. A lot of foundation contractors here will drive rebar into the middle of the footing with a piece of tape on it to mark the top of footing elevation, and pull it out before the concrete sets. But chairs are either concrete or plastic. In your case, probably plastic on concrete would have been the best route. Yeah, bricks or concrete "dobies" (small blocks of cast concrete) are a better practice for rebar chairs in contact with earth.

Dobies are also a good use for that last half yard of concrete left in a truck at the end of a placement. I used to see them formed up in thin wall PVC or plastic cups in the developing world. Wet set a length of tie wire in the top for connecting to the mat later, and you're all set.